A car wiring harness is one of the important components of the car, known as the nerve of the car, and it is the carrier for the electrical signal control of the car. The automotive connector is the most important component of the wiring harness, and it is the key to the reliable transmission of electrical signals in the wiring harness.
The car connector is an important part of the car and acts as a bridge where it is blocked in the circuit. With the continuous improvement of people’s requirements for car safety, environmental protection, comfort and intelligence, hundreds of connectors will be used in a complete vehicle. At present, all automobile wiring harness manufacturers will face a common problem, the problem of wrong wiring harness connectors. This article will focus on the correct positioning method of the connector from five aspects.
Connector upside-down positioning method
The connector inversion is a specific locking device designed to fix the wire harness and the wire harness to the plug end (connector, electrical board end). Generally, the connector inversion is easier to identify in the connector.
The wiring harness designer can design the wiring harness drawing by analyzing the schematic diagram of the connector and electrical board end inversion;
The wiring harness technician can decompose the connector in the corresponding drawing through the schematic diagram of the connector inversion in the wiring harness drawing;
The wiring harness processing personnel can be processed and produced according to the drawing of the wire harness product by identifying the reverse buckle of the connector.
Whether from the perspective of wire harness design or wire harness processing, the connector undercut positioning method can be used as the first method to identify the correct positioning of the connector.
Connector hole positioning method
The hole position of the connector is an error-proof mechanism preset by the connector manufacturer to prevent the connector from being inserted incorrectly. .
The wiring harness designer can draw a schematic diagram of the connector positioning according to the inverted positioning method, and then define the corresponding hole positions in the schematic diagram synchronously according to the numbers and letters written on the surface of the connector.
Wire harness technicians can correctly place the corresponding connectors through the upside-down positioning method, and verify the connector positioning diagram and hole position indication in the wire harness design drawings.
If there is any inconsistency in positioning, they can communicate with the wire harness design in time. Troubleshoot and reduce the risk of incorrect connector insertion.
Wire harness processing personnel can process and produce through the connector inversion positioning and the schematic diagram of the connector hole position.
Secondary proofreading ensures the consistency of design and processing. At the same time, through the hole position schematic positioning method, the processing difficulty can be reduced, the processing cycle can be saved, and the processing cost can be reduced.
The outgoing direction positioning method
Outlet direction positioning refers to the method of starting from the connector end, analyzing the direction of the wire harness, and determining the positioning of the connector. Many ECU connectors have a back cover, and the connector can be located by analyzing the wiring harness of the back cover.
The wiring harness designer can determine the direction of the wiring harness through the spatial arrangement of the wiring harness, and according to the direction of the wiring harness, determine the positioning direction of the connector and draw a schematic diagram of the connector.
The wiring harness technicians can compare the wiring direction and hole position information of the connector in the schematic diagram of the connector, and perform drawing proofreading.
At the same time, the orientation positioning method of the connector appears, and the reserved size of the internal wiring harness of the connector can be determined.
Wire harness processing personnel can produce and process through the orientation of the wire outlet direction and the schematic diagram of the connector hole position, and at the same time, perform secondary proofreading on the schematic diagram of the connector to minimize the production errors of the wire harness.
The internal reserved size of the ECU connector sometimes exceeds 150mm. For refined production wiring harness enterprises, the positioning method of the connector outlet direction is essential.
The method of the secondary locking position of the connector
The secondary lock of the connector is a locking device designed to prevent the terminal from falling off after being inserted into the connector. At the same time, the color of the secondary lock is different from that of the connector, which is easy to distinguish. The wiring harness designer can reflect the secondary lock position of the connector in the schematic diagram of the connector.
On the one hand, it can remind the wiring harness technicians that the connector has matching accessories, and on the other hand, it can play the role of auxiliary positioning. Once all the terminals have been inserted, the harness processor can perform a final inspection of the connector harness insertion before locking the secondary lock.
The positioning method of the internal hole pattern of the connector
The internal hole pattern positioning of the connector refers to the different current carrying capacities of some connectors according to the requirements. The connector manufacturer has designed different hole patterns in the same connector, and the connector can be positioned by different hole patterns.
The wiring harness designer can distinguish the corresponding hole types when drawing the schematic diagram of the connector, which not only facilitates the process decomposition personnel to accurately locate the connector but also prevents the misuse of terminals with different hole types when the wiring harness process decomposition drawing.
The internal hole-type positioning method is easy to identify. At the same time, according to different hole types, there is a certain error-proofing mechanism during processing and production. For example, the large hole type terminal must not be inserted into the small hole of the connector, and the small hole type terminal cannot be fixed into the large hole of the connector.
With the rapid development of the automobile industry, people’s requirements for automobiles are no longer limited to means of transportation, and the requirements for the safety and comfort of automobiles are also constantly improving. At present, connectors in the automobile industry have begun to show equal parts with mechanical parts. the trend of.
The increase in the number of vehicle connectors has brought great confusion to many wire harness designers, wire harness process decomposition personnel, and wire harness processing personnel, on how to obtain the correct positioning of the connector faster and more accurately.
It is under this premise that this paper analyzes the accurate positioning method of the connector in-depth to ensure the accuracy and reliability of the obtained connector positioning information.